Answer:
A
Explanation:
bees(especially non honey bees and other pollinators) play a major roll in every ecosystem
Answer: The following statements describe sinks for atmospheric 
:
<u><em>A. Biomass decomposes via anaerobic respiration in the deep soil.</em></u>
<u><em>B. Plants on land take up carbon dioxide via photosynthesis.</em></u>
<u><em>E. Carbon is transferred from the surface ocean to the deep ocean via the “biological pump” of settling organic matter.</em></u>
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Anaerobic respiration utilizes to break down biomass. Plants and trees consume atmospheric .
Biological pump play a critical role in segregation of from atmosphere.
<u><em>Therefore the correct options in this case are (a),(c) and (e)</em></u>
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The tundra is a biome on the Earth that covers approximately 20% of its land mass, and it is almost exclusively located in the Northern Hemisphere. It is an environment that helps in the regulation of the CO2 in the atmosphere, and it is one of the biggest natural CO2 sinks. The living organisms in the tundra, are using the CO2 for their needs, thus removing parts of it from the atmosphere, and when they die, because the tundra is cold, and the decomposition is very slow, most of the CO2 remains trapped, and doesn't go into the atmosphere.
Unfortunately, the global warming is slowly changing the tundra, and prolongs the summer periods, thus reducing the permafrost period of the year, so the decomposition of the living organisms is getting quicker, and also bigger percentage of the CO2 from them gets to the atmosphere.
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